This topic contains a solution. Click here to go to the answer

Author Question: An electric car is designed to run off a bank of 12-V batteries with total energy storage of 6.0 ... (Read 93 times)

crobinson2013

  • Hero Member
  • *****
  • Posts: 535
An electric car is designed to run off a bank of 12-V batteries with total energy storage of 6.0  107 J. If the electric motor draws 6000 W in moving the car at a steady speed of 10 m/s, how far will the car go before it is out of juice?
 a. 150 km
  c. 100 km
  b. 50 km
  d. 25 km

Question 2

A figure skater on ice with arms extended, spins at a rate of 3.5 rev/s. After he draws his arms in, he spins at 6.0 rev/s. By what factor does the skater's kinetic energy change when he draws his arms in?
 a. 2.4
  c. 0.58
  b. 1.7
  d. 0.12



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

SeanoH09

  • Sr. Member
  • ****
  • Posts: 323
Answer to Question 1

C

Answer to Question 2

B




crobinson2013

  • Member
  • Posts: 535
Reply 2 on: Jul 28, 2018
:D TYSM


pratush dev

  • Member
  • Posts: 321
Reply 3 on: Yesterday
Gracias!

 

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

For a complete list of videos, visit our video library